/usr/lib/ruby/vendor_ruby/ is in ruby-gettext-i18n-rails 1.5.0-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/ruby/vendor_ruby/gettext_i18n_rails/
/usr/lib/ruby/vendor_ruby/gettext_i18n_rails.rb
/usr/lib/ruby/vendor_ruby/gettext_i18n_rails/action_controller.rb
/usr/lib/ruby/vendor_ruby/gettext_i18n_rails/active_model/
/usr/lib/ruby/vendor_ruby/gettext_i18n_rails/active_model.rb
/usr/lib/ruby/vendor_ruby/gettext_i18n_rails/active_model/name.rb
/usr/lib/ruby/vendor_ruby/gettext_i18n_rails/active_model/translation.rb
/usr/lib/ruby/vendor_ruby/gettext_i18n_rails/active_record.rb
/usr/lib/ruby/vendor_ruby/gettext_i18n_rails/backend.rb
/usr/lib/ruby/vendor_ruby/gettext_i18n_rails/base_parser.rb
/usr/lib/ruby/vendor_ruby/gettext_i18n_rails/gettext_hooks.rb
/usr/lib/ruby/vendor_ruby/gettext_i18n_rails/haml_parser.rb
/usr/lib/ruby/vendor_ruby/gettext_i18n_rails/html_safe_translations.rb
/usr/lib/ruby/vendor_ruby/gettext_i18n_rails/i18n_hacks.rb
/usr/lib/ruby/vendor_ruby/gettext_i18n_rails/model_attributes_finder.rb
/usr/lib/ruby/vendor_ruby/gettext_i18n_rails/railtie.rb
/usr/lib/ruby/vendor_ruby/gettext_i18n_rails/ruby_gettext_extractor.rb
/usr/lib/ruby/vendor_ruby/gettext_i18n_rails/slim_parser.rb
/usr/lib/ruby/vendor_ruby/gettext_i18n_rails/string_interpolate_fix.rb
/usr/lib/ruby/vendor_ruby/gettext_i18n_rails/tasks.rb
/usr/lib/ruby/vendor_ruby/gettext_i18n_rails/version.rb